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GK Chapterwise – CDS Previous Year Papers

Table of Contents

141. A person feeds on rice and vegetable made up of potato only. He is likely to suffer from deficiency of

(a)carbohydrate and vitamins
(b) proteins
(c) carbohydrate and proteins
(d) proteins and fats
Ans: (b)
CDS Exam (II) 2008

142. Vaseline was applied to both surfaces of the leaves of a plant. Which of the following process/ processes would be affected?
1. Photosynthesis 2. Respiration
3. Transpiration Select the correct answer using the codes given below

(a)1 and 3
(b) Only 2
(c) 2 and 3
(d) All of these
Ans: (d)

CDS (II) 2010

143. Blood does not coagulate inside the body due to the presence of

(b) heparin
(c) fibrin
(d) plasma
Ans: (b)

CDS (I) 2015

144. Which one among the following gases readily combines with the haemoglobin of the blood?

(b) Nitrogen dioxide
(c) Carbon monoxide
(d) Sulphur dioxide
Ans: (c)
CDS Exam (I) 2011

145. In humans, which one among the following with reference to breathing is correct?

(a)During inhalation, diaphragm relaxes
(b) During exhalation, thorax cavity expands
(c) During inhalation, intra-pleural pressure becomes more negative
(d) Unlike inhalation, normal exhalation is an active process
Ans: (a)

CDS (I) 2013

146. Which one of the following elements is present in green pigment of leaf?

(b) Phosphorus
(c) Iron
(d) Calcium
Ans: (a)

CDS (II) 2017

147. Two strands of DNA are held together by

(a)hydrogen bonds
(b) covalent bonds
(c) electrostatic force
(d) Van der Waals’ forces
Ans: (a)

CDS (I) 2015

148. Which one among the following groups of items contains only biodegradable items?

(a)Paper, grass, glass
(b) Wood, flower, iron-scrap
(c) Sewage, plastic, leather
(d) Cow-dung, paddy-husk, vegetable wastes
Ans: (d)
CDS Exam (I) 2019

149. Which organelle in the cell, other than nucleus, contains DNA?

(a)Endoplasmic reticulum
(b) Golgi apparatus
(c) Lysosome
(d) Mitochondria
Ans: (d)

CDS (I) 2012

150. Which one among the following groups of animals maintains constant body temperature in changing environmental conditions?

(b) Fishes
(c) Amphibians
(d) Reptiles
Ans: (a)

CDS (II) 2007

151. Among the following animals, choose the one having three pairs of legs.

(b) Scorpion
(c) Bug
(d) Mite
Ans: (c)

CDS (I) 2009

152. Which of the following statements is/are correct?
1. Amnion contains fluid.
2. Ultrasound scan can detect the sex of an embryo.
Select the correct answer using the codes given below

(a)Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (c)
CDS Exam (I) 2018

153. Deficiency of which of the following elements is responsible for weakening of bones?
1. Calcium 2. Phosphorus
3. Nitrogen 4. Carbon Select the correct answer using the codes given below

(a)1 and 2
(b) Only 1
(c) 1, 2 and 3
(d) Only 4
Ans: (a)

CDS (I) 2016

154. In a forest, animals like voles and woodlice feed on plant roots and barks respectively. Among the other carnivores, foxes, shrews and owls are present in that forest. Following predictions are made by a group of observers who have visited the forest.
1. If the roots of the tree develop a disease, then voles and foxes will starve and not the owls.
2. Population of voles is dependent on wood lice population through food web.
3. If owl population declines, it will indirectly affect wood lice population.
4. If barks of tree are affected due to a disease, then reduction of wood lice will affect the shrew population forcing owls to eat more voles.
Which of the above predictions is/are correct?

(a)1,2, and 4
(b) Only 3
(c) 1 and 2
(d) Only 2
Ans: (d)

CDS (II) 2008

155. Match the following List I List II
(Gland) (Hormone)
A. Pancreas 1 Cortisol
B. Pituitary 2 Vitamin D
C. Adrenal 3 Thyroid stimulating hormone
D. Kidneys 4 Glucagon Codes A B C D

(a)4 3 1 2
(b) 4 1 3 2
(c) 2 1 3 4
(d) 2 3 1 4
Ans: (a)
CDS Exam (II) 2010

156. Which one among the following is the generic name of the causal organism of Elephantiasis ?

(b) Microfilaria
(c) Wuchereria bancrofti
(d) Culex pipiens
Ans: (c)
CDS Exam (I) 2015

157. Which of the following does not possess a specialised conducting tissue for transport of water and other substances in plants?

(b) Marsilea
(c) Cycas
(d) Fern
Ans: (a)

CDS (I) 2011

158. Which of the following structures of a plant is responsible for transpiration?

(b) Root
(c) Stomata
(d) Bark
Ans: (c)

CDS (II) 2013

159. People suffering from ‘anorexia nervosa’

(a)develop paralysis
(b) show poor reflex
(c) cannot speak properly
(d) eat very little and fear gaining weight
Ans: (d)
CDS Exam (II) 2017

160. Which of the following statements is/are correct regarding fats?
1. Fats are needed for the formation of cell membrane.
2. Fats help the body to absorb calcium from food.
3. Fats are required to repair damaged tissue.
4. Body cannot release energy in fats as quickly as the energy in carbohydrates.
Select the correct answer using the codes given below

(a)1 and 4
(b) Only 1
(c) 2 and 4
(d) 3 and 4
Ans: (a)

CDS (II) 2015

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